Sprinkler



1930; w. STEININGEQR 1,786,035

SPRINKLER Filed May 28, 1928 J6 J6 ig. 3

Patented Dec. 23, 1930 UNITED STATES PATENT OFFICE WILLIAM STEININGER, OF BERWYN, ILLINOIS, ASSIGNOR TO W. D. ALLEN MANUFAC- TUBING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OFILLINOIS SPRINKLER Application filed May 28,1928.

This invention relates to lawn sprinklers, and has reference more particularly to sprinklers of that typehaving a rotatable hollow head mounted on and communicating with a discharge nozzle, the head being formed with perforations through which the water is forced by internal pressure, and the parts of the head in which the perforations are formed being so shaped as to cause the head to rotate under internal pressure. A

sprinkler of this type is illustrated in Letters Patent to Clark, No. 148,596, March 17,

One object of the present invention is to provide an improved hollow sprinkler head adapted to deliver a wider and more uniform spray than heretofore. Another object is to provide an improved mounting for the rotatable head on the nozzle providing a free and easily rotating movement of the head with a minimum of friction and wear. Still another object is to provide a sprinkler of very simple and rugged construction, the parts of which may be easily made and assembled at low cost.

A practical embodiment of the present invention is illustrated in the accompanying drawing, in which Fig. 1 is a top plan view;

Fig. 2 is a side elevation;

Fig. 3 is a vertical axial section of the head and discharge nozzle, showing the man-- ner and means of mounting the former on the latter.

Referring to the drawing, 10 designates a skeleton base structure including the usual horizontal internally threaded coupling member 11 for a pipe or hose 12 and the central vertical externally threaded coupling 4 member 13 for the discharge nozzle of the sprinkler. As shown in Fig. 8, this discharge nozzle comprises an internally threaded coupling portion 1a supplied with the usual annular washer 15, a reduced cylindrical bearing portion 16 and, beyond said bearing portion, a neck portion 17, the bore 16 of the discharge nozzle extending continuously through both the bearing portion 16 and the neck portion 17 so Rotatably mounted on the bearing portion Serial No. 281,209.

16 is a hub 18 formed on its upper end with a-thin annular boss 19 indicated by dotted lines in Fig. 3. 20 indicates theflat bottom wall of the sprinkler head, which is centrally apertured to fit down over the boss 19, and the latter is then swaged down over the inner peripheral edge portion of the bot-tom periphery of the bottom wall 20, as shown at 23 and soldered thereto. It will be noticed that the bearing 16 is slightly longer than the hub 18, so that the retaining collar 21 exerts no clamping effect on the hub 18, leaving the latter free to rotate without any end friction on its bearing.

- Describing the formation of the top wall 23, the metal of the latter is outwardly pressed to form a group of uniformly spaced radial ridges which, as shown in Fig. 1, are of triangular form at their bases, each ridge comprising a p air of triangular inclined walls 2 and 25 merging into each other at their outer edges, and an outer triangular inclined end wall 26 the side edges. of which merge with the outer end edges of the side walls 24 and 25. The side walls 24 are formed with a plurality of spray perforations 24 and each of the end walls 26 is provided with a substantially central perforation 26. In addition to the perforations 2d and 26, the top wall 23 of the head is preferably further formed with a circular row of perforations 27 that are respectively located substantially midway between the inner ends of adjacent ridges.

The perforations 24: being all located in the same side walls of the ridges cause the head to rotate under the internal pressure of the water on the well-known principle of a reaction wheel. The jets issuing from the holes 2e are directed in directions substantially normal to the radial directions of the ridges, the jets issuing through the perforations 26 are directed in a substantially radial direction, while the jets issuing through the circular row of apertures 27 are directed upwardly and outwardly relative to the axis of rotation. The several perforations thus deliver jets in varying directions, so that the result is a spray of a wide and uniform character well adapted to distribute the water evenly over the entire area of ground reached by the sprinkler.

It will be observed that the described means for mounting the sprinkler head on the discharge nozzle does not involve the use of any nuts as fastening devices, so that the sprinkler head is free from liability to accidental separation of its parts. gq I claim 1. In a sprinkler of the type described, a hollow rotary sprinkler head having an eX- teriorly convex top wall formed with spaced radially disposed hollow ridges each formed with two side walls and an outer end wall, one side wall and the outer end wall of each ridge being perforated.

2. In a sprinkler of the type described. a hollow rotary sprinkler head having an exp4) teriorly convex top wall formed with spaced radially disposed hollow ridges each formed with two inclined triangular side walls and an inclined triangular outer end wall, one side wall and the outer end wall of each ridge being perforated.

3. In a sprinkler of the type describml, a hollow rotary sprinkler head having; an exteriorly convex top wall formed with spaced radially disposed hollow ridges each formed 40 with two side walls and an outer end wall, one side wall and the outer end wall of each ridge being perforated, and said top wall having perforations located substantially midway between adjacent ridges.

4C. In a sprinkler of the type described, a hollow rotary sprinkler head having; an exteriorly convex top wall formed with spaced radially disposed hollow ridges each formed with two side walls and an outer end wall, m one side wall and the outer end wall of each ridge being perforated, and said top wall having a circle of perforations located respec tively, substantially midway between the inner ends of adjacent ridges.

WILLIAM STEININGER. 

